Physical properties of reactants: Physical properties of products: 12. When you mix baking soda (a white powder) and vinegar (a clear liquid), you produce carbon dioxide gas. Describe the properties of the reactants and products to show that a chemical change has occurred.

The reactants are baking soda and vinegar. Baking soda is a white powder, and vinegar is a clear liquid. The products of this reaction are carbon dioxide, water, and sodium acetate. Carbon dioxide is a colorless gas, water is a colorless liquid, and sodium acetate is a white crystalline powder.

A chemical change can be seen in how the molecular formulas of the products are different from the reactants, since the reactants have chemically changed into completely different molecules.

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